Leases - Operating Lease Expenses (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Lessee, Lease, Description [Line Items]
Lease cost	$ 50.9	$ 79.6
Cost of sales
Lessee, Lease, Description [Line Items]
Lease cost	43.9	57.7
Selling and administrative expenses
Lessee, Lease, Description [Line Items]
Lease cost	$ 7.0	$ 21.9